Astronomy, Astrophysics, Cosmology Forum

Join in expert discussion on the topics of Astronomy, astrophysics and cosmology. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.

Threads

Graduate ASCL.net - Astrophysics Source Code Library

  • Astronuc
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1

Graduate Requesting help on diagramming the universe

  • Hulse
  • · Replies 26 ·
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26

Graduate Astonishing Coincidence: Age of Universe in $\Lambda$CDM & Milne Cosmologies

  • Garth
  • · Replies 4 ·
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4

Graduate Escape velocity of a body from a black hole.

  • MathematicalPhysicist
  • · Replies 5 ·
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5

Graduate Is the universe a 3D manifold living in 4D space?

  • pivoxa15
  • · Replies 9 ·
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9

Undergrad Origins of Universe: Chaos & The Big Bang

  • Euric
  • · Replies 7 ·
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7

Graduate Venusian Rotation: Retrograde & Axial Tilt 178° Explained

  • DaveC426913
  • · Replies 8 ·
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8

High School Is Alpha Centauri, the closes star to the solar system?

  • the Physic freak
  • · Replies 13 ·
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13

High School Earth's Rotation: Day & Year Cycles

  • Raza
  • · Replies 6 ·
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6

High School Is the Universe Really Spherical? And What Lies Beyond?

  • Delzac
  • · Replies 4 ·
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4

Graduate 'Cyclic universe' can explain cosmological constant

  • scott1
  • · Replies 2 ·
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2

Graduate Are Trojans possible for other planets besides Jupiter?

  • Nereid
  • · Replies 9 ·
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9

Graduate Finding Water on the Moon: A Proposal for an Experiment

  • CosmologyHobbyist
  • · Replies 2 ·
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2

High School What are Some Beginner-Friendly Books on Cosmology and General Relativity?

  • Ludovico
  • · Replies 15 ·
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15

Undergrad How do they measure the CMB temperature?

  • touqra
  • · Replies 3 ·
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3

Undergrad Is the existence of life just a series of improbable accidents?

  • Dook
  • · Replies 5 ·
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5

Stargazing What Can You Capture in the Night Sky with Jupiter, Saturn, and Comet Photos?

  • russ_watters
  • · Replies 2 ·
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2

Graduate Why is my paper very difficult to be published?

  • yuwingsin
  • · Replies 13 ·
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13

Graduate Infinitely small and infinitely large

  • dak246
  • · Replies 1 ·
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1
  • Poll Poll

Undergrad Is a Manned Mission to Mars Beneficial for Scientific Advancement?

  • wolram
  • · Replies 9 ·
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9

Graduate What is the current understanding of the origin of the universe?

  • hurk4
  • · Replies 9 ·
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9

Graduate Can We Understand Axis Tilts in Planetary Systems?

  • marcus
  • · Replies 6 ·
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6

Graduate What Caused the Early Universe to Reach 1000 Trillion Degrees Celsius?

  • batboy
  • · Replies 20 ·
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20

Graduate Mars Mission: Challenges of Sending Humans to Mars

  • wolram
  • · Replies 12 ·
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12

Graduate Radio Waves emitted by Black Holes

  • DeepThunker
  • · Replies 2 ·
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2

Graduate Alternative theories about the origin of the universe

  • Philippe
  • · Replies 25 ·
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25

Undergrad Gravitational slingshotting

  • DaveC426913
  • · Replies 14 ·
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14

High School Regular Flights to and from Moon: Would You See It?

  • MonstersFromTheId
  • · Replies 7 ·
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7

Graduate Is the Hubble Constant Constant?

  • kmarinas86
  • · Replies 6 ·
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6

Graduate Do solar neutrinos really change flavor?

  • Michael Mozina
  • · Replies 14 ·
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14

Graduate Some questions regarding WIMPs as a DM candidate

  • frazzle
  • · Replies 57 ·
2
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57

Graduate Acceleration due to the solar wind

  • ptabor
  • · Replies 1 ·
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1

Graduate How Does Simultaneity Affect Our Understanding of the Universe's Age?

  • cephied
  • · Replies 2 ·
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2

Undergrad The Same Plane: Orbits & Galaxies in Our Solar System

  • scott_alexsk
  • · Replies 1 ·
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1

Graduate Repulsive Gravity & Its Impact on Space Geometry

  • flotsam
  • · Replies 2 ·
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2

Stargazing Getting Started with Astrophotography: A Beginner's Guide

  • Life|Time
  • · Replies 6 ·
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6

Graduate Is a Methane-Molecule-Like Solar System Stable?

  • neutrino
  • · Replies 5 ·
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5

Strike deathray from list of concerns?

  • Ivan Seeking
  • · Replies 4 ·
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4

Undergrad Why does a star's gravitational force increase when it becomes a black hole?

  • jasc15
  • · Replies 10 ·
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10

Undergrad Relation Between Areas of Astronomy

  • Michael Mozina
  • · Replies 18 ·
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18

Graduate Accelerating expansion and the Cosmological Constant

  • Royce
  • · Replies 13 ·
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13

Graduate Congratulations to Christine on the new paper

  • marcus
  • · Replies 13 ·
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13

Graduate Orbital Simulation: Estimating Mass from Orbit & Visual Observations

  • DaveC426913
  • · Replies 11 ·
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11

Undergrad Are we going in a particular direction?

  • Silverbackman
  • · Replies 2 ·
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2

Undergrad Drake equeation and planet finding

  • DaveC426913
  • · Replies 23 ·
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23

Undergrad Is the amount of matter in the universe infinite?

  • kmbop53
  • · Replies 2 ·
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2

Graduate Can the gas model theory explain recent satellite observations?

  • Michael Mozina
  • · Replies 10 ·
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10

Undergrad Someone want to have fun with asteroid simulation?

  • DaveC426913
  • · Replies 5 ·
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5

Graduate Driving past your opponent in a space race

  • cliowa
  • · Replies 9 ·
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9

Graduate Time after big bang we can observe, uncertainty principle

  • Finestructure
  • · Replies 6 ·
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6

Graduate Inverted Physics: Vacuum is Solid, Matter are Holes

  • wolram
  • · Replies 7 ·
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7

High School Discover the Fascinating Phenomenon of Northern Lights

  • gem0688
  • · Replies 21 ·
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21

Undergrad Is Our Sun Part of a Binary Star System?

  • ptabor
  • · Replies 2 ·
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2

High School Our universe should be called multiverse and not universe

  • whiteholes
  • · Replies 25 ·
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25

Graduate Can the Cyclic Universe Theory Be Explained Without Superstring Theory?

  • MathematicalPhysicist
  • · Replies 1 ·
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1

High School Why does the universe look black?

  • QuantumTheory
  • · Replies 11 ·
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11

Graduate How Do Aliens and Astronomers Measure Time Differently in the Galaxy Paradox?

  • japam
  • · Replies 2 ·
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2

Graduate Knowing the environment and the creation of the universe

  • heartless
  • · Replies 6 ·
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6

Undergrad Proving Pluto's Orbit Inside Neptune's - Maths Investigation

  • man_united_number_1
  • · Replies 1 ·
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1

Graduate Could a Wormhole and Black Holes be Used to Reverse the Big Bang?

  • tribdog
  • · Replies 5 ·
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5

Graduate Is the Universe a 3D Surface of a 4D Hypersphere?

  • Sheyr
  • · Replies 14 ·
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14

Graduate Neutrinos, can you explain them to me?

  • Chaos' lil bro Order
  • · Replies 1 ·
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1

Graduate Occam's Razor and WMAP Anomalies

  • wolram
  • · Replies 6 ·
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6

Graduate How Do Scientists Measure the Universe's Expansion Rate?

  • salhuneidi
  • · Replies 21 ·
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21

Graduate Calculating apparent positions of sun and moon

  • jamadagni
  • · Replies 6 ·
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6
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7

Undergrad What distinguishes Pre-main-sequence stars from main sequence stars?

  • envanyatar
  • · Replies 5 ·
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5

Undergrad Matter vs Anti-Matter: Why Did Matter Dominate Universe?

  • wolram
  • · Replies 21 ·
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21

High School Sun's Position in Our Solar System

  • wolram
  • · Replies 9 ·
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9

Graduate Do Celestial Objects Compete for Matter?

  • WarrenPlatts
  • · Replies 4 ·
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4

Undergrad Distance between earth and moon increasing

  • mubashirmansoor
  • · Replies 4 ·
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4

UK Moon Sighting: Was the Halo Real or Atmospheric?

  • wolram
  • · Replies 5 ·
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5

Stargazing Do astronomers at the 3,000 dollar level become degenerates

  • batboy
  • · Replies 1 ·
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1

High School What Is the Center in Sloan Digital Sky Survey?

  • batboy
  • · Replies 5 ·
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5

Undergrad Temp of a Comm Satellite in Orbit Around Earth

  • MonstersFromTheId
  • · Replies 2 ·
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2

Undergrad Why do stars exhibit red shift and blue shift in our universe?

  • shaan_aragorn
  • · Replies 9 ·
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9

Graduate Tried to understand how we/ our universe came to be

  • wolram
  • · Replies 6 ·
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6

Graduate Quasar Anomalies: Lack of Time Dilation in Variability

  • Chronos
  • · Replies 78 ·
3
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78

High School Sun's Companion Star: Nemesis Theory

  • scott1
  • · Replies 3 ·
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3

Graduate What is the logical setup that determines the epoch of the CMB?

  • kmarinas86
  • · Replies 9 ·
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9

Graduate What Are Rosswog's Ideas on the GRB Mechanism?

  • marcus
  • · Replies 9 ·
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9

Graduate Could all supermassive objects in the center of galaxies be SGR's post mortem?

  • kmarinas86
  • · Replies 1 ·
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1

Undergrad How to Calculate a Parsec - Tips from Astronomers

  • Semaphia
  • · Replies 2 ·
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2

Graduate Why Does a(tau) Not Equal af in This Orbital Migration Equation?

  • tony873004
  • · Replies 1 ·
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1

Graduate How Does Quantum Mechanics Explain the Beginning of the Universe?

  • adrian116
  • · Replies 3 ·
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3

Graduate The Great Attractor - What Do We Know?

  • Chaos' lil bro Order
  • · Replies 16 ·
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16

Graduate "Mysterious "Chaos Cloud" Headed Toward Earth"

  • Geographer
  • · Replies 3 ·
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3

Undergrad Evolving Earth: Solar System Environment Over Time

  • wolram
  • · Replies 1 ·
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1

High School How many places in the solar system have liquid water?

  • dimensionless
  • · Replies 7 ·
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7

Undergrad Are White Holes Real or Just a Theoretical Concept?

  • ThomasFuhlery
  • · Replies 5 ·
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5

Graduate The cycle of life? Fractal orbits and spin.

  • Chaos' lil bro Order
  • · Replies 2 ·
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2

Graduate Is There a Preferred Lorentz Frame in the CMB?

  • DavidK
  • · Replies 5 ·
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5

Graduate Debate with my coworker regarding the inflationary theory

  • Pavel
  • · Replies 5 ·
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5

Graduate Dark Energy's effect on the curvature of space time

  • kmarinas86
  • · Replies 10 ·
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10

Undergrad Neutron star: heaviest teaspoon of matter

  • Vincent Vega
  • · Replies 5 ·
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5

Graduate Understanding Strong & Weak Resonance

  • tony873004
  • · Replies 4 ·
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4

Graduate Does Gravity Violate the Cosmo Speed Limit?

  • whiteholes
  • · Replies 20 ·
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20

Graduate Will the universe end in a Big Crunch or a Big Rip?

  • whiteholes
  • · Replies 1 ·
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1

Graduate How Does Black Hole Entropy Increase When Starting with a Pure State?

  • touqra
  • · Replies 6 ·
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6

Undergrad Interest in blackholes and whiteholes

  • whiteholes
  • · Replies 4 ·
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4